CN210290251U - Centrifugal pump impeller - Google Patents
Centrifugal pump impeller Download PDFInfo
- Publication number
- CN210290251U CN210290251U CN201822264075.7U CN201822264075U CN210290251U CN 210290251 U CN210290251 U CN 210290251U CN 201822264075 U CN201822264075 U CN 201822264075U CN 210290251 U CN210290251 U CN 210290251U
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- cover plate
- centre bore
- center hole
- centrifugal pump
- pump impeller
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Abstract
The utility model provides a centrifugal pump impeller, including wheel hub, the blade, front shroud and back shroud, wheel hub is hollow cylinder, wheel hub includes first centre bore, second centre bore and third centre bore, first centre bore, second centre bore and third centre bore are coaxial and connect gradually, the internal diameter of first centre bore is greater than the internal diameter of second centre bore, the internal diameter of second centre bore equals the minimum internal diameter of third centre bore, be provided with the keyway along the axial on the inside wall of second centre bore, the blade locates the outer peripheral face of wheel hub, the front side of blade sets firmly front shroud, the rear side of blade sets firmly the back shroud, back shroud and wheel hub coaxial coupling, and the rear cover plate is provided with a reinforcing rib, the center of the front cover plate is provided with a water inlet, the inner wall of the water inlet is a curved surface, the edge of the water inlet is provided with an annular groove, and a water outlet is formed between the edges of the front cover plate and the rear cover plate.
Description
Technical Field
The utility model relates to an impeller technical field especially relates to a centrifugal pump impeller.
Background
When the centrifugal pump impeller works, the disc friction loss caused by the friction between the outer side and the outer edge of the cover plate of the centrifugal pump impeller and liquid in a pump cavity has great influence on the pump efficiency, and meanwhile, due to the fact that the front cover plate and the rear cover plate of the impeller are asymmetric and the detail structures in the impeller are different, the impeller generates different axial forces during high-speed operation, the impeller can generate larger axial force, the energy loss is increased, and the working efficiency of the impeller is reduced.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a centrifugal pump impeller.
The utility model relates to a centrifugal pump impeller, which comprises a hub, blades, a front cover plate and a rear cover plate, wherein the hub is a hollow cylinder body and comprises a first central hole, a second central hole and a third central hole which are coaxial and connected in sequence, the inner diameter of the first central hole is larger than that of the second central hole, the inner diameter of the second central hole is equal to the minimum inner diameter of the third central hole, a key groove is axially arranged on the inner side wall of the second central hole, the blade is arranged on the outer peripheral surface of the hub, a front cover plate is fixedly arranged on the front side of the blade, a rear cover plate is fixedly arranged on the rear side of the blade, the rear cover plate is coaxially connected with the hub, and the rear cover plate is provided with a reinforcing rib, the center of the front cover plate is provided with a water inlet, the inner wall of the water inlet is a curved surface, the edge of the water inlet is provided with an annular groove, and a water outlet is formed between the edges of the front cover plate and the rear cover plate.
Preferably, the edges of all the blades are equidistant from the central axis of the hub.
Preferably, the quantity of strengthening rib is 4, the equipartition on the back shroud.
Preferably, the outer diameter of the front cover plate is equal to the outer diameter of the rear cover plate.
Preferably, the edge of the front cover plate has a first inclined surface, and the edge of the rear cover plate has a second inclined surface. Further, the inclination angle of the first inclined surface is equal to the inclination angle of the second inclined surface.
Compared with the prior art, the utility model discloses a centrifugal pump impeller has effectively reduced disc friction loss through set up the annular groove on the front shroud, has improved pump efficiency, has strengthened the intensity of apron on the one hand through the strengthening rib design on the back shroud simultaneously, and on the other hand balances axial force to make the work efficiency of impeller obtain showing the improvement.
Drawings
Fig. 1 is a schematic structural diagram of a centrifugal pump impeller according to an embodiment of the present invention.
Fig. 2 is a schematic view of a key groove structure of a centrifugal pump impeller according to an embodiment of the present invention.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Referring to fig. 1 and 2, the centrifugal pump impeller of the present invention comprises a hub 1, a blade 2, a front cover plate 3 and a rear cover plate 4, wherein the hub 1 is a hollow cylinder, the hub 1 comprises a first central hole 11, a second central hole 12 and a third central hole 13, the first central hole 11, the second central hole 12 and the third central hole 13 are coaxial and connected in sequence, the inner diameter of the first central hole 11 is larger than the inner diameter of the second central hole 12, the inner diameter of the second central hole 12 is equal to the minimum inner diameter of the third central hole 13, a key groove 5 is axially arranged on the inner side wall of the second central hole 12, the blade 2 is arranged on the outer peripheral surface of the hub 1, the front cover plate 3 is fixedly arranged on the front side of the blade 2, the rear cover plate 4 is fixedly arranged on the rear side of the blade 2, the rear cover plate 4 is coaxially connected with the hub 1, a reinforcing rib 9 is arranged on the rear cover plate 4, the edge of the water inlet 6 is provided with an annular groove 7, and a water outlet 8 is formed between the edges of the front cover plate 3 and the rear cover plate 4.
Preferably, the distance from the edge of all the blades 2 to the central axis of the hub 1 is equal, so that the force of all the blades 2 on the fluid is equal, and the flow rate and the pressure of the impeller are more uniform and stable.
Preferably, the number of the reinforcing ribs is 4, and the reinforcing ribs are uniformly distributed on the rear cover plate 4.
Preferably, the outer diameter of the front cover plate 3 is equal to the outer diameter of the rear cover plate 4.
Preferably, the edge of the front cover plate 3 has a first inclined surface, and the edge of the rear cover plate 4 has a second inclined surface. Further, the inclination angle of the first inclined surface is equal to that of the second inclined surface, so that friction between the outer edges of the front cover plate and the rear cover plate is reduced, and friction force received by the front cover plate and the rear cover plate is balanced.
The utility model discloses a centrifugal pump impeller has effectively reduced disc friction loss through set up the annular groove on the front shroud, has improved pump efficiency, has strengthened the intensity of apron on the one hand through the strengthening rib design on the back shroud simultaneously, and on the other hand balances axial force to make the work efficiency of impeller obtain the improvement that is showing.
The present invention has been described in relation to the above embodiments, which are only examples for implementing the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, all changes and modifications which do not depart from the spirit and scope of the present invention are deemed to fall within the scope of the present invention.
Claims (6)
1. A centrifugal pump impeller is characterized by comprising a hub, blades, a front cover plate and a rear cover plate, wherein the hub is a hollow cylinder and comprises a first center hole, a second center hole and a third center hole, the first center hole, the second center hole and the third center hole are coaxial and are sequentially connected, the inner diameter of the first center hole is larger than that of the second center hole, the inner diameter of the second center hole is equal to the minimum inner diameter of the third center hole, a key groove is axially formed in the inner side wall of the second center hole, the blades are arranged on the outer peripheral surface of the hub, the front cover plate is fixedly arranged on the front side of each blade, the rear cover plate is fixedly arranged on the rear side of each blade, the rear cover plate is coaxially connected with the hub, reinforcing ribs are arranged on the rear cover plate, a water inlet is formed in the center of the front cover plate, and the inner wall of the water inlet is a, the edge of the water inlet is provided with an annular groove, and a water outlet is formed between the edges of the front cover plate and the rear cover plate.
2. A centrifugal pump impeller according to claim 1 wherein the edges of all of the blades are equidistant from the central axis of the hub.
3. The centrifugal pump impeller of claim 1 wherein said reinforcing ribs are 4 in number and are evenly distributed on said back cover plate.
4. A centrifugal pump impeller according to claim 1, wherein the outer diameter of said front cover plate is equal to the outer diameter of said back cover plate.
5. A centrifugal pump impeller according to claim 1 wherein the edge of said front cover plate presents a first inclined face and the edge of said back cover plate presents a second inclined face.
6. A centrifugal pump impeller according to claim 5, wherein the angle of inclination of said first inclined surface is equal to the angle of inclination of said second inclined surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822264075.7U CN210290251U (en) | 2018-12-31 | 2018-12-31 | Centrifugal pump impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822264075.7U CN210290251U (en) | 2018-12-31 | 2018-12-31 | Centrifugal pump impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210290251U true CN210290251U (en) | 2020-04-10 |
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ID=70058711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822264075.7U Active CN210290251U (en) | 2018-12-31 | 2018-12-31 | Centrifugal pump impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210290251U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682350A (en) * | 2020-12-16 | 2021-04-20 | 安徽工程大学 | Design method for thickness of centrifugal pump impeller blade |
| WO2023070775A1 (en) * | 2021-10-31 | 2023-05-04 | 浙江水泵总厂有限公司 | Impeller outlet structure and centrifugal pump having same |
-
2018
- 2018-12-31 CN CN201822264075.7U patent/CN210290251U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682350A (en) * | 2020-12-16 | 2021-04-20 | 安徽工程大学 | Design method for thickness of centrifugal pump impeller blade |
| CN112682350B (en) * | 2020-12-16 | 2023-08-18 | 安徽工程大学 | Design method for thickness of impeller blade of centrifugal pump |
| WO2023070775A1 (en) * | 2021-10-31 | 2023-05-04 | 浙江水泵总厂有限公司 | Impeller outlet structure and centrifugal pump having same |
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